ozone: Call glFlush before submitting a buffer.

ozone: Call glFlush before submitting a buffer.

Recently we removed glFlush from gbm_surfacless before submitting a buffer,
since relying completely on eglImageFlushExternalEXT and eglClientWaitSyncKHR
should suffice.

Unfortunately UI artifacts showed up on nyan boards after that change.

This CL re-adds a glFlush before submitting a buffer.

Bug: 720045
Change-Id: I1a6f5fc143fcb2d9c15e177de2b4914d383e7d44
Reviewed-on: https://chromium-review.googlesource.com/538599
Reviewed-by: Robert Kroeger <rjkroege@chromium.org>;
Reviewed-by: David Reveman <reveman@chromium.org>;
Commit-Queue: Daniele Castagna <dcastagna@chromium.org>;
Cr-Original-Commit-Position: refs/heads/master@{#480216}
Review-Url: https://codereview.chromium.org/2945893002 .
Cr-Commit-Position: refs/branch-heads/3112@{#385}
Cr-Branched-From: b6460e24cf59f429d69de255538d0fc7a425ccf9-refs/heads/master@{#474897}
Committed: https://chromium.googlesource.com/chromium/src/+/f68b92f107c8147e825942b18ca44bf3002320bc

[Daniele Castagna, 2017-06-19 17:35:59]

Description was changed from

==========
ozone: Call glFlush before submitting a buffer.

Recently we removed glFlush from gbm_surfacless before submitting a buffer,
since relying completely on eglImageFlushExternalEXT and eglClientWaitSyncKHR
should suffice.

Unfortunately UI artifacts showed up on nyan boards after that change.

This CL re-adds a glFlush before submitting a buffer.

Bug: 720045
Change-Id: I1a6f5fc143fcb2d9c15e177de2b4914d383e7d44
Reviewed-on: https://chromium-review.googlesource.com/538599
Reviewed-by: Robert Kroeger <rjkroege@chromium.org>
Reviewed-by: David Reveman <reveman@chromium.org>
Commit-Queue: Daniele Castagna <dcastagna@chromium.org>
Cr-Commit-Position: refs/heads/master@{#480216}
(cherry picked from commit f388d9e52d945a112d57890f83a207e54d10721f)
==========

to

==========
ozone: Call glFlush before submitting a buffer.

Recently we removed glFlush from gbm_surfacless before submitting a buffer,
since relying completely on eglImageFlushExternalEXT and eglClientWaitSyncKHR
should suffice.

Unfortunately UI artifacts showed up on nyan boards after that change.

This CL re-adds a glFlush before submitting a buffer.

Bug: 720045
Change-Id: I1a6f5fc143fcb2d9c15e177de2b4914d383e7d44
Reviewed-on: https://chromium-review.googlesource.com/538599
Reviewed-by: Robert Kroeger <rjkroege@chromium.org>
Reviewed-by: David Reveman <reveman@chromium.org>
Commit-Queue: Daniele Castagna <dcastagna@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#480216}
Review-Url: https://codereview.chromium.org/2945893002 .
Cr-Commit-Position: refs/branch-heads/3112@{#385}
Cr-Branched-From:
b6460e24cf59f429d69de255538d0fc7a425ccf9-refs/heads/master@{#474897}
Committed:
https://chromium.googlesource.com/chromium/src/+/f68b92f107c8147e825942b18ca4...
==========

[Daniele Castagna, 2017-06-19 17:36:01]

Committed patchset #1 (id:1) manually as
f68b92f107c8147e825942b18ca44bf3002320bc.